On 16/05/2025 13:16, Jani Nikula wrote:

From: Haoxiang Li haoxiang_li2024@163.com

Add check for the return value of alloc_ordered_workqueue() and alloc_workqueue(). Furthermore, if some allocations fail, cleanup works are added to avoid potential memory leak problem.

Fixes: 40053823baad ("drm/i915/display: move modeset probe/remove functions to intel_display_driver.c") Cc: stable@vger.kernel.org Signed-off-by: Haoxiang Li haoxiang_li2024@163.com Signed-off-by: Jani Nikula jani.nikula@intel.com

Reviewed-by: Matthew Auld matthew.auld@intel.com

---

.../drm/i915/display/intel_display_driver.c | 30 +++++++++++++++---- 1 file changed, 25 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display_driver.c b/drivers/gpu/drm/i915/display/intel_display_driver.c index 5c74ab5fd1aa..411fe7b918a7 100644 --- a/drivers/gpu/drm/i915/display/intel_display_driver.c +++ b/drivers/gpu/drm/i915/display/intel_display_driver.c @@ -244,31 +244,45 @@ int intel_display_driver_probe_noirq(struct intel_display *display) intel_dmc_init(display); display->wq.modeset = alloc_ordered_workqueue("i915_modeset", 0);

• if (!display->wq.modeset) {

• ret = -ENOMEM;
  

• goto cleanup_vga_client_pw_domain_dmc;
  

• }
• display->wq.flip = alloc_workqueue("i915_flip", WQ_HIGHPRI | WQ_UNBOUND, WQ_UNBOUND_MAX_ACTIVE);
• if (!display->wq.flip) {

• ret = -ENOMEM;
  

• goto cleanup_wq_modeset;
  

• }
• display->wq.cleanup = alloc_workqueue("i915_cleanup", WQ_HIGHPRI, 0);
• if (!display->wq.cleanup) {

• ret = -ENOMEM;
  

• goto cleanup_wq_flip;
  

• }

intel_mode_config_init(display); ret = intel_cdclk_init(display); if (ret)

• goto cleanup_vga_client_pw_domain_dmc;
  

• goto cleanup_wq_cleanup;
  

ret = intel_color_init(display); if (ret)

• goto cleanup_vga_client_pw_domain_dmc;
  

• goto cleanup_wq_cleanup;
  

ret = intel_dbuf_init(display); if (ret)

• goto cleanup_vga_client_pw_domain_dmc;
  

• goto cleanup_wq_cleanup;
  

ret = intel_bw_init(display); if (ret)

• goto cleanup_vga_client_pw_domain_dmc;
  

• goto cleanup_wq_cleanup;
  

ret = intel_pmdemand_init(display); if (ret)

• goto cleanup_vga_client_pw_domain_dmc;
  

• goto cleanup_wq_cleanup;
  

intel_init_quirks(display); @@ -276,6 +290,12 @@ int intel_display_driver_probe_noirq(struct intel_display *display) return 0; +cleanup_wq_cleanup:

• destroy_workqueue(display->wq.cleanup);

+cleanup_wq_flip:

• destroy_workqueue(display->wq.flip);

+cleanup_wq_modeset:

• destroy_workqueue(display->wq.modeset); cleanup_vga_client_pw_domain_dmc: intel_dmc_fini(display); intel_power_domains_driver_remove(display);